While it's great that most people do take water with them to work or when they go out, most people I see are still using plastic bottles for this purpose. I explain why this isn't good for your health, and they quickly change to healthier options!
We now have "BPA-free" plastic bottles and containers because BPA (Bisphenol-A) was added into plastic decades ago to make plastics flexible and durable. But in 2010, the Australian government announced a voluntary phasing-out of BPA in baby bottles only, based on scientific studies showing that BPA was causing many health issues. Other products followed, but it was still a voluntary measure by the plastic producers. Other countries also made similar decisions to reduce BPA in products.
BPA was replaced by BPS (Bisphenol-S), apparently being safer. As time went on and more studies were done on BPS, it was found that BPS is causing exactly the same health problems as BPA and is just as harmful. Some studies show that 81% of Americans have BPS in their urine.
BPA and BPS, even in very small amounts, have large effects on your cells and your body. These chemicals leach from the plastic into the water or food they contain. BPA and BPS are endocrine disruptors or xeno-oestrogens, as they mimic oestrogen and its effects in your body. Endocrine disruptors and xeno-oestrogens disrupt your hormones to affect a cell's normal functioning to cause metabolic disorders such as diabetes and obesity, asthma, birth defects, heart conditions, menstrual cycle issues and PMS symptoms, infertility, prostate enlargement, and many types of cancer.
The issues with BPA and BPS and other chemicals in plastics are worse when the plastic is exposed to warmer temperatures, as the chemicals leach much more in summer, or in hot cars, or worse, when used in the microwave oven to cook or heat foods. BPA and BPS also causes similar affects in animals and wildlife, as our waste water and plastics get into waterways.
BPA chemicals are also found in your shop receipts, in the thermal paper used. BPA is also found in the lining of many tins of various foods, with tinned tomatoes being the worst possible to buy and consume. Tomatoes are very acidic and this eats away at the BPA, so there will be BPA in the tinned tomatoes, and this will affect your health. Just use fresh tomatoes instead! Steam some fresh and organic tomatoes yourself to use in cooking, as well as being better for you and the environment! BPA and BPS exposure can also come from using plastic cooking utensils, plastic kettles, and paper cups lined with BPA/BPS, soft drink cans, and other sources.
Even if you have "BPA-free" plastic bottles and containers, the manufacturers are not telling you that the BPS or other chemicals added to them are just as dangerous to your health as BPA. No plastic bottles or containers are safe! Get rid of them! Replace plastic containers and utensils with glass, stainless steel or other inert containers!